ci: add code quality job

.gitlab-ci.yml

 include:
+  - template: Code-Quality.gitlab-ci.yml
   - project: 'quiqqer/semantic-release'
     file: '/ci-templates/.gitlab-ci.yml'
+
+code_quality:
+  allow_failure: false
+  rules:
+    - if: $CODE_QUALITY_DISABLED
+      when: never
+    - if: $CI_PIPELINE_SOURCE == 'merge_request_event' && $CI_MERGE_REQUEST_TARGET_BRANCH_PROTECTED
 #stages:
 #    - lint
 #  - release